Statement Of Cash Flows [Abstract]
| Concept |
As at 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
As at 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||||||||
| Profit (loss) | — |
47,400,000
GBP
|
—
GBP
|
47,400,000
GBP
|
—
GBP
|
—
GBP
|
56,800,000
GBP
|
9,400,000
GBP
|
—
GBP
|
— |
—
GBP
|
—
GBP
|
41,500,000
GBP
|
41,500,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
47,600,000
GBP
|
6,100,000
GBP
|
—
GBP
|
| Cash flows from (used in) operations | — |
89,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
78,300,000
GBP
|
— | — | — | — | — | — | — |
| Income taxes paid (refund), classified as operating activities | — |
8,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
2,600,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) operating activities | — |
80,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
75,700,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — |
—
GBP
|
— | — | — | — | — | — | — | — | — | — |
400,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
—
GBP
|
— | — | — | — | — | — | — | — | — | — |
5,100,000
GBP
|
— | — | — | — | — | — | — |
| Purchase of property, plant and equipment, classified as investing activities | — |
31,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
28,000,000
GBP
|
— | — | — | — | — | — | — |
| Purchase of intangible assets, classified as investing activities | — |
3,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
2,200,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — |
30,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
34,900,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||||||||
| Proceeds from issuing shares | — |
100,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
400,000
GBP
|
— | — | — | — | — | — | — |
| Payments to acquire or redeem entity's shares | — |
7,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
7,100,000
GBP
|
— | — | — | — | — | — | — |
| Proceeds from borrowings, classified as financing activities | — |
30,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
29,200,000
GBP
|
— | — | — | — | — | — | — |
| Repayments of borrowings, classified as financing activities | — |
41,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
55,700,000
GBP
|
— | — | — | — | — | — | — |
| Payments of lease liabilities, classified as financing activities | — |
2,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
1,600,000
GBP
|
— | — | — | — | — | — | — |
| Dividends paid, classified as financing activities | — |
14,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
11,900,000
GBP
|
— | — | — | — | — | — | — |
| Interest paid, classified as financing activities | — |
1,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
2,600,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — |
35,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
50,400,000
GBP
|
— | — | — | — | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
14,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
9,600,000
GBP
|
— | — | — | — | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — |
200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — |
| Cash and cash equivalents |
19,800,000
GBP
|
— | — | — | — | — | — | — | — |
5,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |